Disentangling the Effects of Message Content and Message Sharer on Students' Views of Political Misinformation

A consistent finding in fake news research is that people are more likely to believe content in favor of their political views. Unclear, however, is whether this political bias is moderated by contextual effects, such as politicians sharing content on their social media accounts. The present study investigated how both message content and sharer affect views of political misinformation. Participants (N = 164) evaluated eight news messages. Message content (pro-left/pro-right misinformation) and sharer (left-wing/right-wing/unknown politician) were manipulated within subjects. As expected, participants agreed more with concordant misinformation (aligned with their political orientation) and perceived it as more accurate than discordant misinformation. There was an additional, smaller effect of politician: Participants agreed more with discordant misinformation when shared by a politician representing their political viewpoint than when shared by others. Furthermore, left-oriented participants' agreement with concordant misinformation was hardly affected by message sharer, whereas right-oriented participants' agreement with concordant misinformation was-unexpectedly-positively affected by the left-wing politician. Irrespective of their political orientation, participants perceived misinformation from the left-wing politician as more accurate than misinformation from other politicians. Our findings suggest that both message content and sharer affect views of misinformation and interact in doing so, which is important for designing interventions on recognizing misinformation. Public Significance Statement This study shows that people are not only biased by their political views when evaluating fake news messages but are additionally affected by the political figure sharing the message. This finding contributes new insights on the question of when and why people fall for fake news.